Question

a^(-3)*a^(7/3)/a^(1/3)

Answer 1

$frac{a^{-3}cdot a^{frac{7}{3}}}{a^{frac{1}{3}}} =a^{-3}cdot a^{frac{7}{3}-frac{1}{3}}=a^{-3}cdot a^2=a^{-3+2}=a^{-1}=frac{1}{a}$